Santa Clara County Vector Control is scheduled to fog an area in South San Jose Saturday night.
County officials confirmed that adult mosquitoes found in the area tested positive for the West Nile.
The fogging zone is within the area surrounded by Blossom Hill Road, Cottle Road, Curie Avenue and Chesbro Avenue.
There have been two confirmed cases of the West Nile virus in the Bay Area, both in Contra Costa County, and five deaths reported statewide.
Dead bird reports are often the first indication of virus activity in an area.
The health department warns that anyone who finds a dead bird, should report it, especially if it's a crow, jay, raven, sparrow, finch or raptor.
Dead birds should not be handled with bare hands.
For more information call 1-877-WNV-BIRD or visit: